How are lithium batteries made?

Generally speaking, similar to the manufacturing methods of traditional batteries, such as lead-acid batteries, nickel-hydrogen batteries, and nickel-cadmium batteries, the same manufacturing steps are required for lithium batteries. However, in terms of details, there are clear differences between the production of lithium batteries and other batteries. The most significant manifestation of these differences is that lithium batteries must strictly control dust and moisture, because the harm is fatal to lithium batteries. The production of lithium batteries can be divided into ingredients, coating, filming, assembly, liquid injection, pre-charging, and sub-capacity. Among them, ingredients and pre-charging have the most significant impact on the final performance of the battery. The foundation of the battery is made during the ingredients. Regarding the ingredients, one sentence describes how to disperse different types of powder materials quickly and well. Only in this way can the subsequent finished batteries have better electrochemical performance; the focus of the coating process is to disperse the average slurry The material is evenly coated on the surface of the current collector to ensure that the current density of the pole piece surface is average during the charging and discharging process of the battery; the coated pole piece is cut into small pieces that can be assembled, and then the positive and negative The pole pieces and diaphragms are stacked one by one, the positive and negative poles are led out through the tabs respectively, as the charging and discharging ports, and finally packaged in the shell to complete the assembly; then the blood connecting the positive and negative poles is injected into the battery A lithium battery is born after pre-charging and dividing the capacity. The positive electrode, the negative electrode, the separator and the electrolyte constitute the four main materials of the lithium battery. The production of the battery is based on the organic production of these four main materials. Connected to ensure that the external relies on electronic conduction, the internal relies on lithium ion conduction, and at the same time electronic insulation. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.